Combine wine, onion, and garlic in a saucepan: bring to a boil. Lower the heat and simmer for 5 minutes. Pour mixture into a bowl: cool.

Strain the wine/onion mixture into a saucepan and add in the dry mustard while beating with a wire whisk. Blend oil, honey, salt and red pepper sauce into mixture. Heat slowly, stirring constantly, until mixture thickens: cool.

Place in a glass or plastic container and cover. Chill at least 2 days to blend flavors.